Happymodel OVX300 OpenVTX Open source OVX306 5.8G 40ch 300mw image transmission

Main features OpenVTX firmware preload Smartaudio is ready Ultra-small size and stable power output Users can update the VTX firmware by themselves OVX300 specifications Model: OVX300 Frequency: 5.8G 40CH Transmit power: 0/RCE/25mw/100mw/300mw Power supply: DC 5V Current (5v): <650ma (300mw) Weight: 0.9g without antenna Standard size: 14*15*3mm OVX303 specifications Model: OVX303 Frequency: 5.8G 40CH Transmit power: 0/RCE/25mw/100mw/300mw Power supply: DC 5V Current (5v): <650ma (300mw) Weight: 1.5 grams without antenna Center distance of mounting hole： 16mmx16mm 20mmx20mm 25.5mmx25.5mm